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BOSTON MARATHON 2025

Holly Layton

Bib: 17617•F

MI

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 47%
Division (F18-39)
#0 / 5469
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
7:43/mi
23:57
↑ 97↓ 3451.5%
10K· 6.21 mi
7:40/mi
47:45
↑ 79↓ 1380.4%
15K· 9.32 mi
7:41/mi
1:11:36
↑ 67↓ 78
20K· 12.43 mi
8:15/mi
1:37:15
↑ 106↓ 860.1%
Half· 13.11 mi
7:49/mi
1:42:35
↑ 19↓ 370.5%
25K· 15.53 mi
8:20/mi
2:02:48
↑ 66↓ 880.2%
30K· 18.64 mi
9:04/mi
2:30:57
↑ 181↓ 1480.2%
20M
9:13/mi
2:43:29
↑ 64↓ 500.2%
21M
10:53/mi
2:54:22
↑ 106↓ 241.6%
35K· 21.75 mi
10:24/mi
3:02:09
↑ 17↓ 861.7%
23M
9:29/mi
3:14:01
↑ 23↓ 630.6%
24M
10:05/mi
3:24:06
↓ 821.3%
40K· 24.85 mi
8:36/mi
3:31:27
↓ 200.3%
25.2M
9:11/mi
3:34:37
↑ 13↓ 160.2%
Finish· 26.22 mi
8:08/mi
3:42:54
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:42:35
Pace7:50 /mi
2nd Half
Distance13.11 mi
Time2:00:19
Pace9:11 /mi
📊Positive Split: 17.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:1923:577:4323:57
7:43
-
10K
6.21 mi11:38:0747:457:4123:48
7:40
-0:03
15K
9.32 mi12:01:581:11:367:4123:51
7:41
+0:01
20K
12.43 mi12:27:371:37:157:5025:39
8:15
+0:34
Half
13.11 mi12:32:571:42:357:505:20
7:49
-0:26
25K
15.53 mi12:53:102:02:487:5420:13
8:20
+0:31
30K
18.64 mi13:21:192:30:578:0628:09
9:04
+0:44
20M
20.00 mi13:33:512:43:298:1012:32
9:13
+0:09
21M
21.00 mi13:44:442:54:228:1810:53
10:53
+1:40
35K
21.75 mi13:52:313:02:098:237:47
10:24
-0:29
23M
23.00 mi14:04:233:14:018:2611:52
9:29
-0:55
24M
24.00 mi14:14:283:24:068:3010:05
10:05
+0:36
40K
24.85 mi14:21:493:31:278:307:21
8:36
-1:29
25.2M
25.20 mi14:24:593:34:378:313:10
9:11
+0:35
Finish
26.22 mi14:33:163:42:548:308:17
8:08
-1:03

Checkpoints & Pacing

📈Pace Line

Pace Progression

Track your pace changes throughout the race. Dot colors mark your quickest to easiest segments, relative to your own pace.

Fastest Pace

7:40 /mi

Average Pace

8:30 /mi

Slowest Pace

10:53 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:16:56

35% of race

Time at Steady Pace

1:29:39

40% of race

Time at Slower Pace

56:19

25% of race

Average Pace: 8:30 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

🎨Heatmap

Pace Heatmap

Where you sped up and eased off relative to your own pace across the race. Colors are relative to your own range, not to other runners.

Loading...
0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Click or hover over segments to see details

✨Sparklines

Checkpoint Splits with Pace Trends

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi11:14:1923:577:4323:57
7:43
#14068
10K
6.21 mi11:38:0747:457:4123:48
7:40
#13800
15K
9.32 mi12:01:581:11:367:4123:51
7:41
#13595
20K
12.43 mi12:27:371:37:157:5025:39
8:15
#14464
Half
13.11 mi12:32:571:42:357:505:20
7:49
#14442
25K
15.53 mi12:53:102:02:487:5420:13
8:20
#14768
30K
18.64 mi13:21:192:30:578:0628:09
9:04
#15494
20M
20.00 mi13:33:512:43:298:1012:32
9:13
#15656
21M
21.00 mi13:44:442:54:228:1810:53
10:53
#16103
35K
21.75 mi13:52:313:02:098:237:47
10:24
#16455
23M
23.00 mi14:04:233:14:018:2611:52
9:29
#16577
24M
24.00 mi14:14:283:24:068:3010:05
10:05
#16914
40K
24.85 mi14:21:493:31:278:307:21
8:36
#16790
25.2M
25.20 mi14:24:593:34:378:313:10
9:11
#16721
Finish
26.22 mi14:33:163:42:548:308:17
8:08
#16604
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi140683954395413293(Top 47%)3619(Top 30%)3619(Top 66%)
10K6.21 mi3.10 mi13800+2683826+1283826+12813565(Top 48%)3700(Top 30%)3700(Top 68%)
15K9.32 mi3.11 mi13595+2053743+833743+8313293(Top 47%)3619(Top 30%)3619(Top 66%)
20K12.43 mi3.11 mi14464-8694269-5264269-52616676(Top 59%)5591(Top 46%)5591(Top 102%)
Half13.11 mi0.68 mi14442+224262+74262+714503(Top 51%)4368(Top 36%)4368(Top 80%)
25K15.53 mi2.42 mi14768-3264485-2234485-22316185(Top 57%)5422(Top 44%)5422(Top 99%)
30K18.64 mi3.11 mi15494-7264947-4624947-46217981(Top 63%)6562(Top 54%)6562(Top 120%)
20M20.00 mi1.36 mi15656-1625071-1245071-12417898(Top 63%)6647(Top 54%)6647(Top 122%)
21M21.00 mi1.00 mi16103-4475359-2885359-28821082(Top 74%)8483(Top 69%)8483(Top 155%)
35K21.75 mi0.75 mi16455-3525575-2165575-21622961(Top 81%)9531(Top 78%)9531(Top 174%)
23M23.00 mi1.25 mi16577-1225680-1055680-10518585(Top 65%)7278(Top 60%)7278(Top 133%)
24M24.00 mi1.00 mi16914-3375909-2295909-22921594(Top 76%)8903(Top 73%)8903(Top 163%)
40K24.85 mi0.85 mi16790+1245866+435866+4314078(Top 50%)5015(Top 41%)5015(Top 92%)
25.2M25.20 mi0.35 mi16721+695839+275839+2712924(Top 46%)4482(Top 37%)4482(Top 82%)
Finish26.22 mi1.02 mi16604+1175788+515788+5113830(Top 49%)4876(Top 40%)4876(Top 89%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 47%
×21story building
+97ft-345ft

Overall

13293

Females

3619

F18-39

3619

5K→10K

3.1 - 6.2 mi

Top 48%
×5story building
+79ft-138ft

Overall

13565

Females

3700

F18-39

3700

10K→15K

6.2 - 9.3 mi

Top 47%
×3story building
+67ft-78ft

Overall

13293

Females

3619

F18-39

3619

15K→20K

9.3 - 12.4 mi

Top 59%
×5story building
+106ft-86ft

Overall

16676

Females

5591

F18-39

5591

20K→Half

12.4 - 13.1 mi

Top 51%
×2story building
+19ft-37ft

Overall

14503

Females

4368

F18-39

4368

Half→25K

13.1 - 15.5 mi

Top 57%
×4story building
+66ft-88ft

Overall

16185

Females

5422

F18-39

5422

25K→30K

15.5 - 18.6 mi

Top 63%
×9story building
+181ft-148ft

Overall

17981

Females

6562

F18-39

6562

30K→20M

18.6 - 20.0 mi

Top 63%
×5story building
+64ft-50ft

Overall

17898

Females

6647

F18-39

6647

20M→21M

20.0 - 21.0 mi

Top 74%
×8story building
+106ft-24ft

Overall

21082

Females

8483

F18-39

8483

21M→35K

21.0 - 21.8 mi

Top 81%
×7story building
+17ft-86ft

Overall

22961

Females

9531

F18-39

9531

35K→23M

21.8 - 23.0 mi

Top 65%
×5story building
+23ft-63ft

Overall

18585

Females

7278

F18-39

7278

23M→24M

23.0 - 24.0 mi

Top 76%
×6story building
+12ft-82ft

Overall

21594

Females

8903

F18-39

8903

24M→40K

24.0 - 24.9 mi

Top 50%
×1story
+6ft-20ft

Overall

14078

Females

5015

F18-39

5015

40K→25.2M

24.9 - 25.2 mi

Top 46%
×1story
+13ft-16ft

Overall

12924

Females

4482

F18-39

4482

25.2M→Finish

25.2 - 26.2 mi

Top 49%
×2story building
+22ft-21ft

Overall

13830

Females

4876

F18-39

4876

Passing Analysis

Category:
Athletes Passed
1625
Passed By
4161
Net Change
-2536
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14068
5K → 10K426158+268#14068#13800
10K → 15K319114+205#13800#13595
15K → 20K53922-869#13595#14464
20K → Half4927+22#14464#14442
Half → 25K94420-326#14442#14768
25K → 30K91817-726#14768#15494
30K → 20M86248-162#15494#15656
20M → 21M27474-447#15656#16103
21M → 35K16368-352#16103#16455
35K → 23M80202-122#16455#16577
23M → 24M22359-337#16577#16914
24M → 40K14622+124#16914#16790
40K → 25.2M701+69#16790#16721
25.2M → Finish14629+117#16721#16604
TOTALS16254161-2536
📊

Passing Visuals

Category:
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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing